"If the Messenger of Allah ﷺ wanted to travel quickly, he would delay Zuhr until the time of 'Asr and combine them, and he would delay Maghrib until he combined it with 'Isha' when the twilight had disappeared." (Using translation from Nasāʾī 594)  

عَنْ رَسُولِ اللهِ ﷺ أَنَّهُ «كَانَ إِذَا عَجِلَ بِهِ السَّيْرُ يُؤَخِّرُ الظُّهْرَ إِلَى وَقْتِ الْعَصْرِ فَيَجْمَعُ بَيْنَهُمَا وَيُؤَخِّرُ الْمَغْرِبَ حَتَّى يَجْمَعَ بَيْنَهَا وَبَيْنَ الْعِشَاءِ حِينَ يَغِيبُ الشَّفَقُ»  

I saw the Messenger of Allah ﷺ delaying the sunset prayer till he would combine it with the 'Isha' when he hastened to set out on a journey. (Using translation from Muslim 703d)  

رَأَيْتُ رَسُولَ اللهِ ﷺ «إِذَا أَعْجَلَهُ السَّيْرُ فِي السَّفَرِ يُؤَخِّرُ صَلَاةَ الْمَغْرِبِ حَتَّى يَجْمَعَ بَيْنَهَا وَبَيْنَ الْعِشَاءِ»  

"We came back with Ibn 'Umar from Makkah. One night he kept on travelling until evening came, and we thought that he had forgotten the prayer!' But he kept quiet and kept going until the twilight had almost disappeared, then he stopped and prayed, and when the twilight disappeared he prayed 'Isha'. Then he turned to us and said: This is what we used to do with the Messenger of Allah ﷺ if he was in a hurry to travel.'" (Using translation from Nasāʾī 596)  

أَنَّهُ نَسِيَ الصَّلَاةَ فَقُلْنَا لَهُ الصَّلَاةَ فَسَكَتَ وَسَارَ حَتَّى كَادَ الشَّفَقُ أَنْ يَغِيبَ ثُمَّ نَزَلَ فَصَلَّى وَغَابَ الشَّفَقُ فَصَلَّى الْعِشَاءَ ثُمَّ أَقْبَلَ عَلَيْنَا فَقَالَ «هَكَذَا كُنَّا نَصْنَعُ مَعَ رَسُولِ اللهِ ﷺ إِذَا جَدَّ بِهِ السَّيْرُ»  

"I went out with 'Abdullah bin 'Umar on a journey to some of his land. Then someone came to him and said: 'Safiyyah bint Abi 'Ubaid is sick, try to get there before it is too late.' He set out quickly, accompanied by a man of the Quraish. The sun set but he did not pray, although I knew him to be very careful about praying on time. When he slowed down I said: 'The prayer, may Allah have mercy on you.' He turned to me but carried on until the twilight was almost gone, then he stopped and prayed Maghrib, then he said the Iqamah for 'Isha', at that time the twilight had totally disappeared and led us in prayer. Then he turned to us and said: 'If the Messenger of Allah ﷺ was in a hurry to travel he would do this.'" (Using translation from Nasāʾī 595)  

أَنْ تُدْرِكَهَا فَخَرَجَ مُسْرِعًا وَمَعَهُ رَجُلٌ مِنْ قُرَيْشٍ يُسَايِرُهُ وَغَابَتِ الشَّمْسُ فَلَمْ يُقِلُّ الصَّلَاةَ وَكَانَ عَهْدِي بِهِ وَهُوَ مُحَافِظٌ عَلَى الصَّلَاةِ فَلَمَّا أَبْطَأَ قُلْتُ «الصَّلَاةَ يَرْحَمُكَ اللهُ فَالْتَفَتَ إِلَيَّ وَمَضَى حَتَّى إِذَا كَانَ فِي آخِرِ الشَّفَقِ نَزَلَ فَصَلَّى الْمَغْرِبَ ثُمَّ أَقَامَ الْعِشَاءَ وَقَدْ تَوَارَى الشَّفَقُ فَصَلَّى بِنَا ثُمَّ أَقْبَلَ عَلَيْنَا» فَقَالَ إِنَّ رَسُولَ اللهِ ﷺ «كَانَ إِذَا عَجِلَ بِهِ السَّيْرُ صَنَعَ هَكَذَا»  

"I accompanied Ibn 'Umar to Al-Hima. [1] When the sun set I felt too nervous to remind him of the prayer, so he went on until the light on the horizon had disappeared and it was getting dark, then he stopped and prayed Maghrib, three Rak'ahs, then he prayed two Rak'ahs immediately afterwards, then he said: 'This what I saw the Messenger of Allah ﷺ do.'" [1] A place near Madinah. (Using translation from Nasāʾī 591)  

أَنْ أَقُولَ لَهُ الصَّلَاةَ فَسَارَ حَتَّى ذَهَبَ بَيَاضُ الْأُفُقِ وَفَحْمَةُ الْعِشَاءِ نَزَلَ فَصَلَّى الْمَغْرِبَ ثَلَاثَ رَكَعَاتٍ ثُمَّ صَلَّى رَكْعَتَيْنِ عَلَى إِثْرِهَا ثُمَّ قَالَ هَكَذَا رَأَيْتُ رَسُولَ اللهِ ﷺ يَفْعَلُ  

[Machine] To inform you of the answer: "That he should pray the Maghrib prayer after sunset, then supplicate with his evening meal, then eat, then pray the Isha prayer after it, then say, 'This is how I saw the Messenger of Allah ﷺ praying.'"  

أَنْ يُظْلِمَ يَنْزِلُ فَيُصَلِّي الْمَغْرِبَ ثُمَّ يَدْعُو بِعَشَائِهِ فَيَأْكُلُ ثُمَّ يُصَلِّي الْعِشَاءَ عَلَى إِثْرِهَا ثُمَّ يَقُولُ «هَكَذَا رَأَيْتُ رَسُولَ اللهِ ﷺ يُصَلِّي»